OpenFlow-Based Multi-controller Model for Fault-Tolerant and Reliable Control Plane

2019 ◽  
pp. 61-73
Author(s):  
Nabajyoti Medhi ◽  
Dilip Kumar Saikia
Keyword(s):  
Fault Tolerant ◽  
Reliable Control ◽  
Control Plane

scholarly journals A critical review based on Fault Tolerance in Software Defined Networks

2021 ◽  
Vol 12 (2) ◽  
pp. 456-461
Author(s):  
Ms. Shailly
Keyword(s):  
Fault Tolerant ◽  
Decoupling Control ◽  
Critical Survey ◽  
Software Defined Networks ◽  
Control Plane ◽  
Tabular Data ◽  
Plane Failure ◽  
Failure Handling ◽  
Data Plane ◽  
And Control

SDN (Software-Defined Networks) is an incipient architecture of decoupling control plane and data plane involved in dynamic management of network. SDN is being installed in production based networks which ultimately lead to the need of secure and fault tolerant SDN. In the present investigation, we     are discussing about the kind of failures with label happen in SDN. A critical survey based on the recently proposed mechanisms for handling failures in SDN. Initially, we discussed with the help of tabular data involving mechanism of data plane failure. We also discussed the various mechanisms for handling misconfiguration of drift able of switches and control plane failure handling mechanisms. We also epitomize issues with both data and control plane mechanism that are discussed earlier. In the end, we are stating that there is need of build much efficient and secure mechanism for SDN networks.

scholarly journals Improving the Fault Tolerance of Elements of Modern Infocommunication Networks with the Use of Default Gateway Redundancy Protocols

2020 ◽  
pp. 68-81
Author(s):  
Oleksandra Yeremenko ◽  
Amal Mersni
Keyword(s):  
Fault Tolerance ◽  
Network Architecture ◽  
Fault Tolerant ◽  
Future Research ◽  
Software Defined Network ◽  
Control Plane ◽  
Network Resources ◽  
Data Plane ◽  
Recent Developments ◽  
Control Traffic

The article is devoted to the Network Layer means to ensure resilience during designing an infocommunication system that can counteract faults and failures. A review of the default gateway redundancy protocols concept and analysis of recent developments to overcome fault tolerance challenges in the Software-Defined Networks (SDN) control plane are conducted. In addition, an approach to the use of default gateway redundancy protocols in the existing Software-Defined Network architecture is proposed. Therefore, within the approach, the redundancy of the virtual controller is organized based on the current protocol implemented in traditional IP networks, and the SDN switch interacts with the virtual controller. This mechanism aims to reduce the amount of circulating overhead (control traffic), and the backup controller’s organization increases the control plane’s reliability. Whereas in hybrid and hierarchical SDN networks with border routers, the GLBP mechanism can be applied, which increases the reliability of the controller connected to the data plane. In addition, there are several scenarios where the controller that manages the operation of the SDN data plane may have multiple backup controllers to switch in case of failure, or a controller pool is used to manage each network that makes up the SDN data plane. It also highlights promising future areas for research and development to improve Software-Defined Network resilience, which contributes to the emergence of new solutions. Thus, future research directions are seen in proposing mathematical flow-based models of fault-tolerant interaction of the control plane and the data plane based on redundancy. At the same time, setting the problem in an optimization form with the implementation of load balancing will help to use available network resources effectively.

scholarly journals MORPH: An Adaptive Framework for Efficient and Byzantine Fault-Tolerant SDN Control Plane

2018 ◽  
Vol 36 (10) ◽  
pp. 2158-2174 ◽  
Author(s):  
Ermin Sakic ◽  
Nemanja Deric ◽  
Wolfgang Kellerer
Keyword(s):  
Fault Tolerant ◽  
Control Plane ◽  
Byzantine Fault ◽  
Adaptive Framework

Redundant Method for Measuring Downhole Posture of the Steering Drilling Tool

2014 ◽  
Vol 945-949 ◽  
pp. 2170-2174
Author(s):  
Zi Li Liu ◽  
Wei Sheng Yan ◽  
Wei Wei Xiao
Keyword(s):  
Measurement System ◽  
Fault Tolerant ◽  
Working Environment ◽  
Reliable Control ◽  
Control Parameters ◽  
Engineering Process ◽  
Drilling Tool ◽  
System A ◽  
Drilling System ◽  
Posture Measurement

Exact downhole posture measurement of steering drilling tool can provide reliable control parameters for downhole control system, so as to ensure the accurate control of hole trajectory. How to ensure the reliability of the posture measurement system while it works in harsh environment is a key technique in the engineering process of steering drilling system. A redundant measurement method based on multi-accelerometers has been put forward according to the analysis of the working environment and measurement reliability requirements of posture measurement system. Then the posture parameter solution formulas were given. According to the linear relationship between measurement signals, a reconfiguration method of the redundant measurement system was put forward to ensure the fault-tolerant operation of the system.

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